PERBANDINGAN PENGARUH MEMBRAN (REED VALVE) STANDART DAN CUSTOM TERHADAP KINERJA MESIN 2 TAK 135CC

sholeh, Mohammad (2021) PERBANDINGAN PENGARUH MEMBRAN (REED VALVE) STANDART DAN CUSTOM TERHADAP KINERJA MESIN 2 TAK 135CC. Undergraduate thesis, UNIVERSITAS MUHAMMADIYAH JEMBER.

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Abstract

xiv
PERBANDINGAN PENGARUHiMEMBRAN (REED VALVE)
STANDART DANiCUSTOM TERHADAP KINERJA MESIN 2
TAK 135CC
Mohammad Sholeh¹, Kosjoko S.T., M.T², Dr. Mokh. Hairul Bahri, S.T., M.T³
Teknik Mesin, Universitas Muhammadiyah Jember Ii
e-mail: ¹kindra220@gmail.com, ²kosjoko@unmuhjember.ac.id,
³mhairulbahri@unmuhjember.ac.id.
INTISARI
Latar belakang. motor bakar ialah suatu jenis mesin penggerak yang bekerja
dengan memanfaatkan energi kalor dari proses pembakaran menjadi energi mekanik.
motor bensin sebagai salah satu jenis motor pembakaran dalam yang digunakan untuk
menggerakkan atau sebagai sumber tenaga dari suatu kendaraan. Karburator masih
digunakan dalam mesin kecil dan dalam mobil tua atau khusus seperti yang
dirancang untuk balap mobil stok. Reed valve ini sebagai pintu masuknya bahan
bakar, pelumas dan udara yang telah dicampur di karburator menuju ke ruang
bakar. Reed valve juga berfungsi sebagai penghalang terbakarnya proses
pembakaran di luar silinder, terutama karburator.Ruang bakar sendiri adalah
ruang proses terjadinya pencampuran bahan bakar udara menjadi energi panas
dengan pergerakan piston dan menghasilkan emisi gas buang. Emisi gas buang
sendiri adalah sisa pembakaran yang terjadi di ruang bakar, emisi gas buang ini
dikeluarkan melalui knalpot atau exhaust system. Dalam penelitian ini bertujuan
mengetahuiiperbandingan pengaruh membran (reed value) standart dan costum
terhadap kinerja mesin 2 tak 135CC.
Penelitian ini termasuk metodeieksperimental. Penelitian ini dilakukan di
dynotester UNMUH Jl. Karimata, No. 49 Kecamatan Sumbersari, Kabupaten
Jember, Provinsi Jawa Timur pada bulan Juli sampai denganiselesai. Alat
penelitian. (1) Dynotest Alat yang digunakan untuk menukur daya pada sepeda
motor dalam satuan Hp (horse power). (2) Tachometer Alat yang digunakaniuntuk
mengukur putaran mesinidalam satan RPM (rotasi per minutes). (3) Set Tool Box
Digunakan untuk melakukan tune-up pada sepeda motor agar diketahui kondisi
mesin yang paling mendekati standaridan untuk memasang membran pada
mesiniyamaha 2 tak 135CC. (4) Blower Digunakan untuk mendinginkan
mesinisebagai pengganti hembusan angin dan menjaga suhu kerja mesin motor.
(5)Stop Watch Alat untuk mengetahuiiwaktu operasi mesin untuk setiap percobaan
mesin 2 tak 135CC.
Menurut pembahasan dan hasil diatas. Perbandingan Peforma motor 2 tak
135cc dengan menggunakan membran standart dan custom mengalami hasil yg
berbeda. Dimana membran custom mengalamiikenaikan peforma mesin dengan
hasil torsi tertinggi yaitu (26,17 N.m) dan daya (20,9 HP). sedangkanimembran
standart hanya menghasilkan torsi tertinggi yaitu (23,01 N.m) dan daya (18,2 N.m).
Faktor perbedaan membranidiatas di karenakan lidah membraniyang berbeda
dimana lidah membran yg sudah di modifikasi lebih lentur jadi saat penghisapan
bahan bakar lebih cepat dan sempurnaisehingga kinerja mesin lebih optimal.
sedangkan membran standart lidahnya kaku jadi menyulitkan saat penghisapan
bahan bakar sehingga kinerjaimesin jadi berat karna kurangnya efisiensi saat
penghisapan
Kata kunci: karburator, membran dan ruang bakar
xv
COMPARISON OF THE EFFECT OF STANDARD AND
COSTUME MEMBRANES ON THE PERFORMANCE OF A
135 CC 2 STROKE ENGINE
Mohammad Sholeh¹, Kosjoko S.T., M.T², Dr. mokh. Hairul Bahri, S.T., M.T³
Mechanical Engineering, University of Muhammadiyah Jember
e-mail: ¹kindra220@gmail.com, ²kosjoko@unmuhjember.ac.id,
³mhairulbahri@unmuhjember.ac.id.
ABSTRACT
Background. The combustion engine is a type of engine that works by utilizing
heat energy from the combustion process into mechanical energy. gasoline motor as
one type of internal combustion motor that is used to drive or as a source of power
from a vehicle. Carburetors are still used in small engines and in older or specialty cars
such as those designed for stock car racing. This reed valve serves as the entrance for
fuel, lubricant and air that has been mixed in the carburetor to enter the combustion
chamber. The reed valve also functions as a barrier to the burning of the combustion
process outside the cylinder, especially the carburetor. The combustion chamber itself
is the process space for mixing fuel-air into heat energy with the movement of the
piston and producing exhaust gas emissions. Exhaust emission itself is the rest of the
combustion that occurs in the combustion chamber, this exhaust emission is released
through the exhaust or exhaust system. This study aims to determine the comparison of
the effect of the standard and costum membrane (reed value) on the performance of the
135CC 2 stroke engine.
This research is an experimental method. This research was conducted at the
dynoster UNMUH Jl. Karimata, No. 49 Sumbersari District, Jember Regency, East
Java Province from July to completion. Research tools. (1) Dynotest Tool used to
measure power on a motorcycle in units of Hp (horse power). (2) Tachometer Tool
used to measure engine speed in units of RPM (rotations per minute). (3) Set Tool Box
Used to tune-up the motorcycle to find out the condition of the engine that is closest to
the standard and to install the membrane on the 135 cc 2 stroke engine. (4) Blower
Used to cool the engine as a substitute for wind gusts and maintain the working
temperature of the motor engine. (5) Stop Watch Tool to find out the engine operating
time for each trial of the 135 cc 2 stroke engine.
According to the discussion and results above. Comparison of the performance
of a 135cc 2-stroke motorcycle using standard and custom membranes experienced
different results. Where the custom membrane experienced an increase in engine
performance with the highest torque (26.17 N.m) and power (20.9 HP). while the
standard membrane only produces the highest torque (23.01 N.m) and power (18.2
N.m). The membrane difference factor above is due to a different membrane tongue
where the modified membrane tongue is more flexible so that when the fuel intake is
faster and perfect, the engine performance is more optimal. while the standard tongue
membrane is stiff so it makes it difficult when sucking fuel so that the engine
performance becomes heavy because of the lack of efficiency when sucking
Keywords: carburetor, membrane and combustion chamber

Contribution

Nama Dosen Pembimbing

NIDN/NIDK

Dosen Pembimbing

kosjoko, kosjoko

nidn0715126901

Dosen Pembimbing

Bahri, Mokh. Hairul

nidn0717087203

Item Type:	Thesis (Undergraduate)
Keywords/Kata Kunci:	karburator, membran dan ruang bakar
Subjects:	600 Technology and Applied Science > 620 Engineering
Divisions:	Faculty of Engineering > Department of Mechanical Engineering (S1)
Depositing User:	Mohammad sholeh | kindra220@gmail.com
Date Deposited:	27 Aug 2021 06:56
Last Modified:	27 Aug 2021 06:56
URI:	http://repository.unmuhjember.ac.id/id/eprint/11923

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